Device for recrimping the head seams of drums



DEVICE FOR RECRIMPING THE HEAD SEAMS OF' DRUMS Filed Nov. l, 1951 2Sheets-Sheet l Henry F. Niemann INVENTOR.

Oct. 13, 1953 H. F. NIEMANN 2,655,120

DEVICE FDR EECRIMPING lTHE HEAD sEAMs DE DRUMS Filed Nov. l, 1951 2Sheets-Sheet 2 Henry F. Niemann INVENTOR.

Q BY my ghn; M

Attorneys Patented Oct. 13, 1953 DEVICE FOR RECRIMPING THE HEAD SEAMS OFDRUMS Henry F. Niemann, Sedalia, M0., assignor of fifty per cent toSherman D. Beckley, Sedalia, Mo.

Application November 1, 1951, Serial No. 254,352

3 Claims.

Y This invention relates to a drum sealer and particularly for amanually operated device to be put on a. drum to seal a leak therein.

Metal drums for containing liquid material are constructed assubstantially cylindrical bodies with a bottom and a head rigidlysecured therein by means of a double reverse crimp seal. These seals aremade either by inserting a sealing gasket between the material before itis crimped or by crimping it down and preferably welding or otherwiseuniting the crimped edges. Because of the rough handling that thesedrums receive they frequently spring leaks through these crimped edges.It has heretofore been found necessary to weld or reweld the crimpededges to stop the leak. Since the welding expands the metal adjacent tothe weld it has been found necessary to run the weld completely aroundthe seam in order to provide a leak proof joint. Also if the leak isfound after the drum is filled it is usually necessary to completelyempty and clear the drum to prevent explosion during the sealingoperation.

The present invention provides a means for recrimping the rims of steeldrums in order to seal the leak without removing the contents of thedrum. Since the present sealing method crimps only the leaky portion ofthe seam it is only necessary to extend the crimping action over theleaking part of the joint.

Therefore, in accordance with the present invention there is provided abase on which is mounted a beaded roller and a pressure block pivotallymounted on the base and pressed toward the base. A crimping roll ismounted in the pressure block and the crimping roll and beaded roll isseated on the crimped edge of the drum and pressure is applied while thecrimping roll is turned to crimp and press the sealed edges intoleak-proof engagement.

It is accordingly an object of this invention to provide an improvedcrimping roller.

It is a further object of this invention to provide an improved drumsealer.

It is a further object of this invention yto provide a drum sealer thatmay be utilized to seal a drum while it is full of liquid.

It is a further object of this invention to provide a drum sealer thatonly need be appliedto the leaking portion f the barrel.

It is a further object of this invention to provide a drum sealer whichis readily portable from drum to drum.

It is a further object of this invention to provide a drum sealer thatcan be manually operated by one man.

y Other objects and many of the attendant advantages of this inventionwill be apparent from the following detailed description taken inconjunction with the accompanying drawings in which:

Figure 1 is a top plan view of a drum sealer in place on a drum;

Figure 2 is a bottom plan view of a sealer;

Figure 3 is a cross section through the drum sealer taken substantiallyon the plane indicated in the line 3 3 of Figure l and showing thepressure block applied between the crimping roller and the beadedroller;

Figure 4 is an enlarged perspective View of the yoke; and

Figure 5 is an enlarged perspective View of the pressure block.

In the exemplary embodiment of the invention, the drum I0 is providedwith a bottom I2. the drum I0 and the bottom I2 being rigidly andpermanently connected to each other by means of a double inverse bend orcrimp I4. The crimp I4 may be welded or may have material of variouskinds between the bends to produce a leak` tight joint. Also thematerials may be welded to each other braised, soldered or otherwiseintegrally united.

If rough handling or other accident should produce a leak to the seal I4it can be recrimped by means of a sealer presently to be described.

The sealer itself comprises a base I6 preferably of cast iron having anupstanding bracket I8 at one edge thereof. The bracket I8 is preferablyprovided with a central passage so the bracket is substantially channelshape having two extending anges 20 and 22, defining a channel 24therebetween. A pressure block 26 has an extending rib 28 whichsubstantially fits in the channel 24. Transverse passage 30 providedadjacent the top end of the rib 28 cooperates with passages 32 and 34 inthe flanges 20 and 22. A rod 36 extends through the flanges 20 and 22and the rib 28 so that the block is pivotally mounted in the bracket I8.The rib 28 is rounded off at the upper corner 38 so that the block 26may freely swing outwardly from the bracket I8.

The pressure block 26 is provided with a longitudinal passage 4I) forreceiving the shaft 42 of a crimping roller 44 which is mounted on thelower end of the block 26 and journaled therein by means of a shaft 42.The shaft 42 extends upwardly out of the block 26 and is provided withrecesses 4S adjacent the top thereof and a collar 43 is mounted on theshaft 42 and secured thereto by means 0f set screws 50 so that the shaft42 is retained in the bore 40 to properly mount the crimping roll 44 atthe lower end of the block 26. Bearing washer 52 is preferably insertedbetween the top of the roller 44 and the bottom of the block 26. Theupper end of the shaft 42 extending beyond the collar 48 is providedwith a non-round section, such as a square section 54 for receiving anysuitable handle for applying the necessary pressure by turning the roll44. In the present example, a double handled wrenchlike extension isprovided with an opening 58 snugly engaging the .squareV portion 54 ofthe shaft 42 so that the roller 44 may be conveniently turned by amanual operation.

The base I6 is provided with a vertically extending passage 60substantially parallel to the upstanding bracket |8. A beading roller 62is provided with a shaft 64 which extends through the passage 32 tojournally mount the shaft 52 in the base 20 so that the beading roller62 `is journally mounted with respect to the base |6. A bearing washer66 is usually installed between the top of the roller 62 and the bottomof the base I6. The top of the shaft 64 is provided withv an undercutsection 68 and a collar 10 to be mounted on the topof theshaft -64 andsecured thereto by means of a set screw 12 engaging the undercut portion68 ofY the shaft 64 to retain the shaft 64 in mounted relation .in thebase 6.

A-pair of ears 16 and 18 mountedon the base in spaced relation to theupstanding flange members 20 and 22 are provided with transverseopenings 80 and 82 for receiving pins 84 and 86. A yoke Y90 islpivotally mounted on the pins 84 and 86 by means of transverse passages92 and 94. Ilhe' yoke 90 is substantially a bifurcated member having aweb 96 and a pair of arms 98, |00. Ehe top corners of the arms 98 and|00 are rounded olf as at |02 so that the yoke 90 ymay be raisedupwardbut when it drops down it will be stopped by ,the square corner |03 andwill not pass below center.

The block 26 is provided with an outwardly extending ledge` A|04 havingadepression |06 therein. The web.96 of the yoke 90 is provided witharbore |08 fin which is threadedly engaged a set screw having a knurlhead H2. The end H4 andthe screw ||0 iswengaged in the recess |06 and-bytightening the screw ||0 the block 26 is pressed toward the base I6 sothat the crimping roll-44 isf-pressed' toward the beading roller 62. Theypressure between the `two being determined bythe set screw H0.Preferably a lubricant passage H6 is provided in the block 26 so thatthe journal bearing of the shaft 42 may be constantly lubricated.

In order .to maintain the pressure normal between-the beading `roll V|52and the crimping roll 42a plurality herein lshown as a pair of guiderolls and |22 are journaled in the base I6 and retainedtherein bycollarsin -substantially the same manner vas indicated with the` roller62. -Size of these rollers |20 andv |22V will Idepend on the size of'the drum being operated on for the larger size, 55 gallondrum, largesize rollers |20 and |22 will be used but for a gallon `drum afslightlysmaller size of guide rollers |20 andl |22 will be utilized.

In order topreventinjury to the device and excessive accumulation ofdirt on the fastening collars, a cover V|25 is constructed of suitablematerial such las .sheet metal and provided with ears |26 and |28which-receive suitable fasteners such as screws |30.

In 'the operation of the device screw rH0 is opened and the bracket oryoke 90 is raised up so -thatthe pressure block may swing 'out andallowrthecrimping roller 44 to be adjusted onto the rim of a drum |0.Theyoke 90-is then rput in place'and the screw yend ||4 inserted in therecess |06 and the screw .tightened by means of the head ||2 to supplythe necessary pressure betweenthe rollers 44 and 62 after which thehandle bar 56.is adjusted on the squared portion 54 and the shaft 42rotated in any direction toadvance the crimping roller around theleaking portion of the seam I4.

-in, without departing from the true spirit of the invention.

Having idescribed the invention, what is claimed .as new `is:

l. A drum sealer comprising a base, an upstanding bracket on. said base,a pressure block pivotally attached to said bracket adjacent thetopithereof, a pair of ears on said base adjacent the bottom of saidbracket, a yoke pivotally mounted onsaid ears, a screw in said yoke 4forpressing said ypressure block `toward said base, .a longitudinal bore-in-said pressure block, a crimping roll including a shaft, said shaftjournaled in said bore, means for rotatingsaidrshaft in said bore, aplurality of bores arranged in arcuate -formation in said base, a beadedrollerl a shaft on said roller, said shaftjournaled` in the central bore`of-said bores, ray plurality of guide rollers mounted in lsaidarcuately arranged boresadjacent .the beaded roller, said guide rollersmaintaining a pressure point normal to said crimping andbeaded roller.

k2. A drum sealer comprising a base, an upstanding bracket on said base,a pressure block pivotally attached to said bracket adjacentthe topthereof, a pair of ears on said base adjacent the bottom of saidbracket,a yoke pivotally mounted on said ears, a screwy in said yoke forpressing said pressure block toward lsaid base, a longitudinal bore insaid pressureblock, a crimping roll including a shaft,said shaftjournaled in said bore, means for rotating said shaft in saidlbore,,aplurality of bores arranged in arcuate formation in said base, a beadedroller, a shaft onsaid roller, saidshaft journaledin the central bore ofa plurality of said bores, a guide roller mountedin a borefadjacenteachV side -ofsaid beaded roller for centering the pressure between saidcrimping roller and said beaded roller, a cover mounted'on said base.

3. A drum sealer comprising a base, anl upstanding bracket-adjacent oneedge of .said base, a pressure block, said pressure `block beingVpivotally attached to saidbracket adjacent the end remote from saidbase, said pressure block having a longitudinal bore therethrough, ashaft journaled in saidfbore, a crimping roller rigidly mount ed onthe-lower. end ofsaid shaft, a beading roller journaled on said base-inopposed relation lto* said 1 crimping rollen-a yokeincluding a pairofarms,

said arms being pivotally mounted on said base, a set screwthreadedly-mountedin said yoke and engaging said pressure block forpressing said crimping roller ytoward said beading roller, and means forrotating the shaft carrying the crimping roller.

HENRY F. NIEMANN.

.References Cited ingthe yfile of this vpatent UNITED STATES PATENTSNumber Name `Date 178,299 Hunter June 6, 1876 537,429 Alexander Apr. 16,1895 1,306,168 v`Bowers June 10, 1919 1,693,064 Tipton Nov. 27, 19281,812,479 Hahnewann June 30,1931 2,334,407 Grebe Nov. 1,6, .19,43

FOREIGN PATENTS Number Country Date 504.160 France June 26,1920

